Properties

Label 2940.163
Modulus $2940$
Conductor $980$
Order $84$
Real no
Primitive no
Minimal yes
Parity even

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(2940, base_ring=CyclotomicField(84))
 
M = H._module
 
chi = DirichletCharacter(H, M([42,0,63,40]))
 
pari: [g,chi] = znchar(Mod(163,2940))
 

Basic properties

Modulus: \(2940\)
Conductor: \(980\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(84\)
sage: chi.multiplicative_order()
 
pari: charorder(g,chi)
 
Real: no
Primitive: no, induced from \(\chi_{980}(163,\cdot)\)
sage: chi.is_primitive()
 
pari: #znconreyconductor(g,chi)==1
 
Minimal: yes
Parity: even
sage: chi.is_odd()
 
pari: zncharisodd(g,chi)
 

Galois orbit 2940.dl

\(\chi_{2940}(163,\cdot)\) \(\chi_{2940}(247,\cdot)\) \(\chi_{2940}(403,\cdot)\) \(\chi_{2940}(487,\cdot)\) \(\chi_{2940}(583,\cdot)\) \(\chi_{2940}(823,\cdot)\) \(\chi_{2940}(907,\cdot)\) \(\chi_{2940}(1003,\cdot)\) \(\chi_{2940}(1087,\cdot)\) \(\chi_{2940}(1327,\cdot)\) \(\chi_{2940}(1423,\cdot)\) \(\chi_{2940}(1507,\cdot)\) \(\chi_{2940}(1663,\cdot)\) \(\chi_{2940}(1747,\cdot)\) \(\chi_{2940}(1927,\cdot)\) \(\chi_{2940}(2083,\cdot)\) \(\chi_{2940}(2167,\cdot)\) \(\chi_{2940}(2263,\cdot)\) \(\chi_{2940}(2347,\cdot)\) \(\chi_{2940}(2503,\cdot)\) \(\chi_{2940}(2587,\cdot)\) \(\chi_{2940}(2683,\cdot)\) \(\chi_{2940}(2767,\cdot)\) \(\chi_{2940}(2923,\cdot)\)

sage: chi.galois_orbit()
 
order = charorder(g,chi)
 
[ charpow(g,chi, k % order) | k <-[1..order-1], gcd(k,order)==1 ]
 

Related number fields

Field of values: $\Q(\zeta_{84})$
Fixed field: Number field defined by a degree 84 polynomial

Values on generators

\((1471,1961,1177,1081)\) → \((-1,1,-i,e\left(\frac{10}{21}\right))\)

First values

\(a\) \(-1\)\(1\)\(11\)\(13\)\(17\)\(19\)\(23\)\(29\)\(31\)\(37\)\(41\)\(43\)
\( \chi_{ 2940 }(163, a) \) \(1\)\(1\)\(e\left(\frac{23}{42}\right)\)\(e\left(\frac{27}{28}\right)\)\(e\left(\frac{55}{84}\right)\)\(e\left(\frac{2}{3}\right)\)\(e\left(\frac{71}{84}\right)\)\(e\left(\frac{1}{14}\right)\)\(e\left(\frac{5}{6}\right)\)\(e\left(\frac{83}{84}\right)\)\(e\left(\frac{1}{7}\right)\)\(e\left(\frac{17}{28}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 2940 }(163,a) \;\) at \(\;a = \) e.g. 2